ML20062F402

LER#78-094/03L-0 on 781120:during NRC Audit It Was Found That RHR Time Delay Relay E11-K126 Had Been Left in Uncalibrated State from 780412 to 780627.Redundant Relays E11-K125 a & B Were Functioning.Procedures Will Be Rev

ML20062F402
Person / Time
Site:	Hatch
Issue date:	11/20/1978
From:	Thomas Greene GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20062F393	List: ML20062F402 PM-78-474, Forwards LER 78-094/03L-0
References
LER-78-094-03L, LER-78-94-3L, NUDOCS 7812180170
Download: ML20062F402 (1)

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l EVENT DESCniPTION AND PROUABLE CONSECUENCES h lCn 11-10-73 during an NRC Audit it wac discovered that FBR time delav relw Ell-X12G l *j 3 lhad been inadvertently left in an uncalibrated state from 4-12-78 to 6-27-78. Durina !

i 4 lthis time period in question the redundant relays, Ell-K125 A & B were 'functionine as I  !

g [ desired. This is a non-repotitive occurrence for relay Ell-K12'6. l 9I I ,

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• l CI rl@laI Al@ W@ l Rl El Ll Al Yl Xlh l Hl@ l Zlh 9 40 12 13 18 19 2J SEQUENTIAL OCCUR R ENCE REPORT REVI5FON LER EVENT YEAR REPORT NO. COOF TYPE  :.o.

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el 42 43 44 47 CAUSE DESCRIPTION ANO CCRRECTIVE ACTIONS l

"lT] l Maintenance Requests 78-1257 and 3890 were implemented to confirm that relavs E11-K1261 E l and K125 A & B are set properly. To insure that these relavs alena with the -46 I t

l g l counter parts are periodically checked for setpoint drift, RHR surveillance crocedurest t

g l will be revised before their next Tech Spec recuired imolementation. I L

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Til 1010 l O l@l c l@l n/a I PERSONNE L INJunlES NUMets OESCRIPflON E l0l0l0lhl 8 9 88 12 N/A 80 l

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NAME CF PitEPARER Tom Greene, S tin t . T'n r1 So rvi eru: PHONE: 2I M7-77'Il j l

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